Poehler, Pratt, Jones, Offerman and the gang are heading back to Pawnee on April 30. The main cast of NBC's Park and Recreation will reunite for a one-time charity TV special, the network announced Thursday. Confirmed returning cast members include Amy Poehler, Rashida Jones, Aziz Ansari, Nick Offerman, Aubrey Plaza, Chris Pratt, Adam Scott, Rob Lowe, Jim O’Heir and Retta.